gov.noaa.nodc:CLIVAR-LADCP eng utf8 series NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-02-02T20:37:25Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Ocean currents from lowered acoustic Doppler current profilers (LADCP) from the Climate Variability (CLIVAR) project from 2003 to 2014 assembled at the University of Hawaii and Lamont-Doherty Earth Observatory, Columbia University 2019-10-02 publication 2019-10-27 revision 2019-10-02 creation NOAA National Centers for Environmental Information gov.noaa.nodc:CLIVAR-LADCP NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Julia M. Hummon University of Hawai'i at Mānoa (UHM) hummon@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information resourceProvider University of Hawai'i at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information resourceProvider Molly O. Baringer NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Molly.Baringer@noaa.gov https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information collaborator John Bullister NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information collaborator Ruth Curry Woods Hole Oceanographic Institution (WHOI) rcurry@whoi.edu http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Richard Feely NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information collaborator NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information collaborator Terrence M. Joyce Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Michael McCartney Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Alison M. Macdonald Woods Hole Oceanographic Institution (WHOI) amacdonald@whoi.edu http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Sabine Mecking University of Washington (UW) smecking@apl.washington.edu http://www.apl.washington.edu/ HTTP University of Washington (UW) website Institution web page information collaborator Paul E. Robbins Scripps Institution of Oceanography (SIO) probbins@ucsd.edu https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information collaborator Christopher Sabine NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information collaborator Bernadette M. Sloyan Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Kevin G. Speer Florida State University (FSU) kspeer@ifremer.fr https://www.ifremer.fr/ HTTPS Florida State University (FSU) website Institution web page information collaborator Janet Sprintall Scripps Institution of Oceanography (SIO) jsprintall@ucsd.edu https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information collaborator James H. Swift Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information collaborator Lynne Talley Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information collaborator John Toole Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Rik Wanninkhof NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information collaborator Eric Firing University of Hawai'i at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information principalInvestigator Julia M. Hummon University of Hawai'i at Mānoa (UHM) hummon@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information principalInvestigator Andreas M. Thurnherr Lamont-Doherty Earth Observatory (LDEO) ant@ldeo.columbia.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information principalInvestigator P. Michael Kosro Lamont-Doherty Earth Observatory (LDEO) kosro@coas.oregonstate.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information principalInvestigator Firing, Eric University of Hawai'i at Mānoa https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information author Hummon, Julia M. University of Hawai'i at Mānoa hummon@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information author Thurnherr, Andreas M. Lamont-Doherty Earth Observatory ant@ldeo.columbia.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information author Visbeck, Martin Lamont-Doherty Earth Observatory kosro@coas.oregonstate.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information author University of Hawai'i at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information contributor NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information contributor Florida State University (FSU) contributor Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information contributor NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information contributor Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information contributor Lamont-Doherty Earth Observatory (LDEO) http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information contributor tableDigital This collection holds the Lowered Acoustic Doppler Current Profile (LADCP) estimates of ocean currents collected for the Climate Variability (CLIVAR) project. LADCPs estimate deep ocean absolute currents and shear. The project has been completed (CLIVAR ended in 2014). ADCPs use the Doppler shift of an outgoing frequency along a beam to return measured velocity along that beam. ADCPs typically have 4 beams, allowing measurement of velocity in 3 dimensions, in bins of varying distance from the transducer head. In this application, the ADCP is mounted on a CTD rosette frame and lowered along with the rest of the package, hence called Lowered ADCP ("LADCP"). LADCP requires less ship time in estimating deep currents as compared to historic measuring systems such as Pegasus systems. The goal is to determine water velocities to the full depth of the ocean for each LADCP deployment. Ocean velocities are very small (few cm/s), especially in the deep water. The package is typically lowered or raised at 1m/s for much of the water column, creating a challenging data processing situation. To reduce the LADCP measurements, one must utilize other data streams such as CTD at both standard levels and at the highest frequency of recording, GPS positions, ship navigation, ocean depth, and shipboard ADCP. Lowered ADCP data requires ancillary information to improve the processed data product. Over generations, the processing has improved and these ancillary components are systematically collected along with the LADCP data. In older datasets, they may be missing entirely. The directory structure and naming convention for the submitted LADCP datasets attempt to rationalize 20 years of data acquisition and processing by a collection of scientists who were inventing the field of LADCP acquisition and processing, so there is some variety in the organization and naming of the original datasets. Evolution of the instrumentation and processing techniques have continued. For the NCEI archive, three levels are defined: 1) Level-0, raw LADCP and ancillary data streams of the down- and up-cast, 2) Level-1, processed LADCP and ancillary data streams for the down-, up-, and averaged cast, and 3) Level-2 science-ready subset of select parameters. Presently only Levels 0 and 1 will be archived since work continues for defining error associated with Level 3. Note, Level 1 data are "as processed" based on the processing code pertinent at that time. There is one processed file per station cast. The ancillary streams of Level-1 are the basic oceanographic variables of interest, and may also include a variety of additional fields associated with the processing. Physical oceanographers with need of understanding ocean currents. LADCP provides estimates of deep currents for large scale circulation studies and smaller scale mixing and internal wave investigations. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:CLIVAR-LADCP Preview graphic PNG 0204131 0204163 0204257 0204287 0204390 0204527 0204624 0204728 0204826 0204926 0204959 0205030 0205089 0205196 0205277 0205333 0205385 0205436 0205555 0205622 0205677 0205724 0205783 0205839 0205889 0205948 NCEI ACCESSION NUMBER 2019-06-28 publication CURRENT SPEED - EAST/WEST COMPONENT (U) CURRENT SPEED - NORTH/SOUTH COMPONENT (V) HYDROSTATIC PRESSURE theme NODC DATA TYPES THESAURUS ADCP CTD instrument NODC INSTRUMENT TYPES THESAURUS physical profile theme NODC OBSERVATION TYPES THESAURUS NOAA Ship Ronald H. Brown R/V Atlantis R/V Knorr R/V Melville R/V Roger Revelle R/V THOMAS G. THOMPSON RV Nathaniel B. Palmer platform NODC PLATFORM NAMES THESAURUS Florida State University Lamont-Doherty Earth Observatory NOAA Atlantic Oceanographic and Meteorological Laboratory NOAA Pacific Marine Environmental Laboratory Scripps Institution of Oceanography University of Hawai'i at Mānoa Woods Hole Oceanographic Institution dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Hawai'i at Mānoa dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS U.S. Climate Variability and Predictability Research Program (U.S. CLIVAR) project NODC PROJECT NAMES THESAURUS Bay of Bengal Caribbean Sea Gulf of Alaska Indian Ocean North Atlantic Ocean North Pacific Ocean Philippine Sea South Atlantic Ocean South Pacific Ocean Southern Ocean Tasman Sea place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication COLUMBIA/LDEO > Lamont-Doherty Earth Observatory, Columbia University DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce WHOI > WOODS HOLE OCEANOGRAPHIC INSTITUTION dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian at20 at20_20 kn173a kn173b knox03rr knox04rr knox14rr mv0407 mv0408 mv0911 mv1001 mv1305 mv1306 nbp1102 nbp1403 r0801 rb0304 rb0501 rb0711 rb1002 rb1102 rb1304 rb1307 rr0903 tn191_leg1 tn191_leg2 zhng01rr project Cruise ID 316N200309 316N200310 318M200406 318M20091121 318M20100105 318M20130321 320620110219 320620140320 325020060213 33AT20120324 33AT20120419 33RO200306_01 33RO200501 33RO20071215 33RO20100308 33RO20110926 33RO20130803 33RO20131223 33RR200501 33RR20070204 33RR20070322 33RR20080204 33RR20090320 project EXPOCODE CLIVAR > Climate Variability project Global Change Master Directory (GCMD) Project Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian ADCP > Acoustic Doppler Current Profiler CTD > Conductivity, Temperature, Depth LADCP > Lowered Acoustic Doppler Current Profiler instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian ATLANTIS (call sign: KAQP, ICES code: 33AT, 1997-) KNORR (call sign: KCEJ, ICES code: 316N, 1970-) MELVILLE (call sign: WECB, ICES code: 318M, 1969-) NATHANIEL B. PALMER (call sign: WPB3210, ICES code: 3206, 1992-) ROGER REVELLE (call sign: KAOU, ICES code: 33RR, 1996-) Ronald H. Brown (call sign: WTEC, ICES code: 33RO, 1997-) THOMAS G. THOMPSON (call sign: KTDQ, ICES code: 3250, 1991-) platform ICES/SeaDataNet Ship Codes OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN OCEAN > INDIAN OCEAN OCEAN > INDIAN OCEAN > BAY OF BENGAL OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN OCEAN > SOUTHERN OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian A10 A13_5 A16N A16S A20 A22 I05 I06S I08S I09N P02 P06E P06W P16N P16S P18 S04P place WOCE Section accessLevel: Public otherRestrictions Cite as: Firing, Eric; Hummon, Julia M.; Thurnherr, Andreas M.; Visbeck, Martin (2019). Ocean currents from lowered acoustic Doppler current profilers (LADCP) from the Climate Variability (CLIVAR) project from 2003 to 2014 assembled at the University of Hawaii and Lamont-Doherty Earth Observatory, Columbia University. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/CLIVAR-LADCP. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. For all but the Level 2 sets, the user is expected to have experience working with ocean current data to understand the limits of application of the LADCP data. Firing, E., & Gordon, R. L. (1990). Deep ocean acoustic Doppler current profiling. Proceedings of the IEEE Fourth Working Conference on Current Measurement, 192–201. https://doi.org/10.1109/curm.1990.110905 1990 publication International DOI Foundation (IDF) https://doi.org/10.1109/curm.1990.110905 https://doi.org/10.1109/curm.1990.110905 HTTPS https://doi.org/10.1109/curm.1990.110905 conference proceedings information Firing, E. author Gordon, R.L. author IEEE publisher documentDigital Proceedings of the IEEE Fourth Working Conference on Current Measurement pp. 192-201 crossReference sciencePaper Fischer, J., & Visbeck, M. (1993). Deep Velocity Profiling with Self-contained ADCPs. Journal of Atmospheric and Oceanic Technology, 10(5), 764–773. https://doi.org/10.1175/1520-0426(1993)010<0764:dvpwsc>2.0.co;2 1993-10 publication International DOI Foundation (IDF) https://doi.org/10.1175/1520-0426(1993)010%3C0764:dvpwsc%3E2.0.co;2 https://doi.org/10.1175/1520-0426(1993)010%3C0764:dvpwsc%3E2.0.co;2 HTTPS https://doi.org/10.1175/1520-0426(1993)010%3C0764:dvpwsc%3E2.0.co;2 journal article information Fischer, J. author Visbeck, M. author American Meteorological Society publisher documentDigital J. Atmos. Oceanic Technol. 10(5) ISSN 0739-0572, ISSN 1520-0426, pp. 764-773 crossReference sciencePaper Thurnherr, A. M. (2010). A Practical Assessment of the Errors Associated with Full-Depth LADCP Profiles Obtained Using Teledyne RDI Workhorse Acoustic Doppler Current Profilers. Journal of Atmospheric and Oceanic Technology, 27(7), 1215–1227. https://doi.org/10.1175/2010jtecho708.1 2010-07-01 publication International DOI Foundation (IDF) https://doi.org/10.1175/2010jtecho708.1 https://doi.org/10.1175/2010jtecho708.1 HTTPS https://doi.org/10.1175/2010jtecho708.1 journal article information Thurnherr, A. M. Lamont-Doherty Earth Observatory, Palisades, New York author American Meteorological Society publisher documentDigital Journal of Atmospheric and Oceanic Technology 27(7) ISSN 1520-0426, ISSN 0739-0572, pp. 1215-1227 crossReference sciencePaper Visbeck, M. (2002). Deep Velocity Profiling Using Lowered Acoustic Doppler Current Profilers: Bottom Track and Inverse Solutions. Journal of Atmospheric and Oceanic Technology, 19(5), 794–807. https://doi.org/10.1175/1520-0426(2002)019<0794:dvpula>2.0.co;2 2002-05 publication International DOI Foundation (IDF) https://doi.org/10.1175/1520-0426(2002)019%3C0794:dvpula%3E2.0.co;2 https://doi.org/10.1175/1520-0426(2002)019%3C0794:dvpula%3E2.0.co;2 HTTPS https://doi.org/10.1175/1520-0426(2002)019%3C0794:dvpula%3E2.0.co;2 journal article information Visbeck, Martin author American Meteorological Society publisher documentDigital J. Atmos. Oceanic Technol. 19(5) ISSN 0739-0572, ISSN 1520-0426, pp. 794-807 crossReference sciencePaper Caldwell, Patrick C.; Firing, Eric; Hummon, Julia M. (2001). Ocean currents measured by Shipboard Acoustic Doppler Current Profilers (SADCP) from global oceans as part of the Joint Archive (JASADCP) since 1985. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/g961-ya97. 2001-04-16 publication International DOI Foundation (IDF) https://doi.org/10.25921/g961-ya97 NOAA National Centers for Environmental Information gov.noaa.nodc:NCEI-UH-JASADCP https://doi.org/10.25921/g961-ya97 HTTPS https://doi.org/10.25921/g961-ya97 dataset information Caldwell, Patrick C. US DOC/NOAA/NESDIS > National Centers for Environmental Information author Firing, Eric University of Hawai'i https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information author Hummon, Julia M. University of Hawai'i hummon@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawai'i at Mānoa (UHM) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference collection eng; USA utf8 environment oceans 133.03 114.846 -77.349 63.301 2003-06-04 2014-05-05 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. netCDF netCDF-3 34091 https://www.ncei.noaa.gov/archive/accession/CLIVAR-LADCP HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/metadata/granule/geoportal/?from=0&size=10&esdsl=%7B%22query%22%3A%7B%22bool%22%3A%7B%22must%22%3A%5B%7B%22query_string%22%3A%7B%22analyze_wildcard%22%3Atrue%2C%22query%22%3A%22fileid%3ACLIVAR-LADCP.*%22%7D%7D%5D%7D%7D%7D#searchPanel HTTPS Web browser Granule Search Search for data granules belonging to this collection (a granule is the smallest aggregation of data that can be independently described and retrieved). search series NCEI Accession 0204131 v1.1 was published. 2019-10-02T17:30:35Z NCEI Accession 0204163 v1.1 was published. 2019-10-03T11:09:14Z NCEI Accession 0204257 v1.1 was published. 2019-10-05T04:07:13Z NCEI Accession 0204287 v1.1 was published. 2019-10-05T19:05:39Z NCEI Accession 0204390 v1.1 was published. 2019-10-06T12:02:59Z NCEI Accession 0204527 v1.1 was published. 2019-10-07T18:48:13Z NCEI Accession 0204624 v1.1 was published. 2019-10-08T14:44:36Z NCEI Accession 0204728 v1.1 was published. 2019-10-09T18:47:32Z NCEI Accession 0204826 v1.1 was published. 2019-10-10T15:46:13Z NCEI Accession 0204926 v1.1 was published. 2019-10-11T14:26:12Z NCEI Accession 0204959 v1.1 was published. 2019-10-12T14:09:11Z NCEI Accession 0205030 v1.1 was published. 2019-10-13T14:35:40Z NCEI Accession 0205089 v1.1 was published. 2019-10-14T16:09:43Z NCEI Accession 0205196 v1.1 was published. 2019-10-15T13:29:10Z NCEI Accession 0205277 v1.1 was published. 2019-10-16T21:57:19Z NCEI Accession 0205333 v1.1 was published. 2019-10-17T13:57:39Z NCEI Accession 0205385 v1.1 was published. 2019-10-18T16:17:47Z NCEI Accession 0205436 v1.1 was published. 2019-10-19T19:22:21Z NCEI Accession 0205555 v1.1 was published. 2019-10-20T13:55:47Z NCEI Accession 0205622 v1.1 was published. 2019-10-21T17:09:52Z NCEI Accession 0205677 v1.1 was published. 2019-10-22T16:26:14Z NCEI Accession 0205724 v1.1 was published. 2019-10-23T14:48:43Z NCEI Accession 0205783 v1.1 was published. 2019-10-24T13:08:10Z NCEI Accession 0205839 v1.1 was published. 2019-10-25T15:57:29Z NCEI Accession 0205889 v1.1 was published. 2019-10-26T17:28:57Z NCEI Accession 0205948 v1.1 was published. 2019-10-27T10:14:48Z asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian ADCP ADCP Acoustic Doppler Current Profiler The Acoustic Doppler Current Profiler (ADCP) measures currents beneath a ship while underway. Sound signals sent from the moving ship bounce back to receivers aboard the ship. This provides a profile of water movement relative to the ship-precise modern navigation, allowing the ship's motion to be subtracted from the data. These devices are also used on moorings and profilers and, along with acoustic backscattering, measure animal biomass. Particles in the path of the sound waves, mostly plankton, reflect a small part of the sound energy back toward receivers, allowing researchers to make remote estimates of the sizes and numbers of animals present in the water column. Before the 1970's, the most technologically advanced instrument used to measure water velocity was known as a Doppler speed log. This evolved into the first commercial ADCP, produced in the mid-1970's, which used averaging. Later in the 1970's, the first vessel-mounted ADCP was developed to measure water velocity more accurately and to allow measurement in range cells over a depth profile. As instruments evolved, so did new techniques in Doppler signal processing. Initially, Doppler speed logs used simple analog signal processing methods, which are still used in some commercial speed logs today. However, the first ADCPs incorporated analog-to-digital signal conversion over a narrow communication bandwidth. Around 1990, this technique was developed into broadband signal processing. Since then, broadband ADCPs have been able to generate very accurate, real-time velocity measurements. CTD CTD Conductivity-Temperature-Depth probe NOAA Ship Ronald H. Brown Updated information from ICES for UNITED STATES platform Ronald H. Brown Flag : UNITED STATES - US (ISO Country Code) Call Sign : WTEC Title : NOAA Ship Platform Class : Research vessel IMO : 9105786 Pennant : R 104 Commissioned Date : 1997-07-19 Current Length : 83.5 Built : 1997 Information Source : http://www.moc.noaa.gov/rb/index.html (URL) Lloyds URL : http://www.seasearcher.com/lmiu/vessels/overview.htm?vesselID=277516 *General Comments:* Name RESEARCHER II planned during build was never used. R/V Atlantis Flag: United States of America Vessel Type: Research Vessel (Oceanographic) DOB: Mar 1997 IMO: 9105798 AS OF 3/3/1997 - WHOI https://www.whoi.edu/what-we-do/explore/ships/ships-atlantis/ R/V Knorr Title: R/V Flag: United States of America Vessel Type: Research Vessel (Oceanographic) DOB: 1970 IMO: 7738618 MMSI: 367246000 R/V Melville Hull Classification: AGOR-14. It is a research vessel operated by Scripps Institution of Oceanography. Commissioned on 10 July 1968 and the current status is active. https://scripps.ucsd.edu/ships/melville R/V Roger Revelle Flag: United States Type: Research Vessel IMO: 9075228 Company: Scripps Institution of Oceanography DOB: 1996-06 https://scripps.ucsd.edu/ships/revelle R/V THOMAS G. THOMPSON Use this platform for data attributed to R/V Thomas G. Thompson that were collected between July 1991 and present. R/V Thomas G. Thompson (AGOR-23) Owned by US Navy, leased to University of Washington. Active dates: July 1991 (Source: http://www.navsource.org/archives/09/57/5723.htm, last accessed on 20 Dec 2011) RV Nathaniel B. Palmer Updated information from ICES for the vessel NATHANIEL B. PALMER from UNITED STATES. Use 3206 for all data attributed to the vessel NATHANIEL B. PALMER from UNITED STATES. This platform has a current Call Sign = WPB3210 and two previous call signs, related to owner/company name changes since 1992. Previous call signs for NATHANIEL B. PALMER are: KUS1475 (1992 - ca. 1996) WCE9345 (ca. 1996 - mid-2006) WBP3210 (mid-2006 to present) Name : NATHANIEL B. PALMER Flag : UNITED STATES - US (ISO Country Code) Call Sign : WBP3210 Title : RV Platform Class : 31 Research vessel IMO : 9007257 Commissioned Date : 1992 Current Length : 86 Built : 1992-03 Notes : Data also found under previous call sign KUS1475 Lloyds URL : http://www.seasearcher.com/lmiu/vessels/overview.htm?vesselID=241527 Confirmed by NOAA on 2013-11-19.